KR20090054178A - Method for processing voice during multilateral image communication and portable terminal having the same - Google Patents

Method for processing voice during multilateral image communication and portable terminal having the same Download PDF

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Publication number
KR20090054178A
KR20090054178A KR1020070120910A KR20070120910A KR20090054178A KR 20090054178 A KR20090054178 A KR 20090054178A KR 1020070120910 A KR1020070120910 A KR 1020070120910A KR 20070120910 A KR20070120910 A KR 20070120910A KR 20090054178 A KR20090054178 A KR 20090054178A
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KR
South Korea
Prior art keywords
speaker
voice
predetermined
video call
portable terminal
Prior art date
Application number
KR1020070120910A
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Korean (ko)
Inventor
김정호
Original Assignee
(주)케이티에프테크놀로지스
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Priority to KR1020070120910A priority Critical patent/KR20090054178A/en
Publication of KR20090054178A publication Critical patent/KR20090054178A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)

Abstract

Disclosed are a voice processing method for a multi-party video call and a portable terminal for performing the same, which enable accurate communication between a plurality of video call participants in a multi-party video call. First, a voice is provided from at least one speaker participating in a multi-party video call, and a predetermined speaker is selected from the at least one speaker. Then, a process is performed such that the voice of the selected predetermined speaker is output louder than the voice of other speakers except the selected predetermined speaker. Therefore, it is possible to accurately communicate with a predetermined speaker selected by the user during a multi-party video call.

Multi-party video call, voice, pick, block

Description

Method for Processing Voice During Multilateral Image Communication And Portable Terminal Having The Same}

The present invention relates to a portable terminal, and more particularly, to a method for processing a voice during a multi-party video call and a portable terminal for performing the same, which can be applied to a portable terminal having a multi-party video call function.

Due to the evolution of mobile communication technology, full-scale video telephony has become commercially available, and it is now possible to make a call while looking at the other party using a portable terminal, regardless of the place, away from the existing mobile communication service mainly focused on transmitting and receiving voice calls and short messages.

In addition, at least two people have been able to participate in a video call at the same time and make a multi-party video call where they can see each other while viewing each other. Video calls are used for business purposes such as teleconferences.

In a general mobile terminal having a multi-party video call function, the voice output level of all participants participating in the video call is set to a constant level. When everyone speaks at the same time, each participant's voice is overlapped or distorted to communicate normally. There is a inconvenience in use because the user of the portable terminal cannot distinguish the voice of a predetermined participant who wants to listen mainly among the plurality of video call participants. The disadvantage is that it is difficult to use for the purpose.

Accordingly, a first object of the present invention is to provide a voice processing method in a multi-party video call, which enables accurate communication between a plurality of video call participants in a multi-party video call.

In addition, a second object of the present invention is to provide a portable terminal for performing a voice processing method for a multi-party video call, which enables accurate communication between a plurality of video call participants during a multi-party video call.

According to an aspect of the present invention for achieving the first object of the present invention, a voice processing method for a multi-party video call comprises the steps of: receiving a voice from at least one speaker participating in the multi-party video call; Selecting a predetermined speaker among one speaker and performing a process of outputting a louder voice of the selected speaker than a voice of another speaker except the selected speaker. The processing of outputting a louder voice of the selected speaker than the voice of another speaker other than the selected speaker may include blocking a voice of another speaker except the selected speaker. The processing of outputting a louder voice of the selected speaker than the voice of another speaker other than the selected speaker is performed by reducing the voice level of the speaker other than the selected speaker to a predetermined ratio. It may include. Performing a process of outputting a voice of the selected predetermined speaker louder than a voice of another speaker other than the selected speaker, when the voice of the selected predetermined speaker is provided; When the voice of the selected predetermined speaker is not provided, the voice of the other speaker may be output. Selecting a predetermined speaker among the at least one speaker may include distinguishing the predetermined speaker through a call separator included in a voice signal provided from each of the at least one speaker.

In addition, a portable terminal for performing a voice processing method in a multi-party video call according to an aspect of the present invention for achieving the second object of the present invention is selected if a predetermined speaker is selected from at least one speaker participating in the multi-party video call An audio codec for decoding at least one voice of a voice signal of the speaker and the other speaker selected from the controller, the control unit controlling to output a voice of the predetermined speaker louder than a voice of another speaker except the predetermined speaker; It includes. The controller may control the voice of the selected speaker to be louder by blocking voices of other speakers except for the selected speaker. The controller may be configured to reduce the voice level of other speakers other than the selected predetermined speaker to a predetermined ratio so that the voice of the selected predetermined speaker is louder. The controller may block the voice output of the other speaker when the voice of the selected predetermined speaker is provided, and output the voice of the other speaker when the voice of the selected predetermined speaker is not provided. The controller may distinguish the predetermined speaker through a call separator included in each of the voice signals provided from the at least one speaker. The controller may assign a predetermined serial number to each of the at least one speaker participating in the multi-party video call, and assign one of the shortcut key and the numeric key to each of the assigned serial numbers.

According to the method for processing a voice during a multi-party video call and a portable terminal for performing the same, if a predetermined speaker is selected during a multi-party video call, the voice output of another speaker except the selected speaker is cut off or the voice output level of the other speaker is set to a predetermined ratio. Decreasing to allow the voice of the selected speaker to be louder than that of other speakers.

Therefore, it is possible to accurately communicate with a predetermined speaker selected by the user during a multi-party video call.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description.

However, this is not intended to be limited to the specific embodiment of the present invention, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and / or includes a combination of a plurality of related items or any item of a plurality of related items.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention. Hereinafter, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

1 is a flowchart illustrating a voice processing method for a multi-party video call according to an embodiment of the present invention, and illustrates a process of outputting only a voice of a predetermined speaker selected from a plurality of video call participants.

Referring to FIG. 1, a portable terminal establishes a video call call between a portable terminal of a participant participating in a multi-party video call (step 101).

Thereafter, the portable terminal receives a voice signal provided from a plurality of speakers participating in a multi-party video call (step 103).

Here, the plurality of speakers refers to the participants who have spoken among the plurality of participants participating in the multi-party video call.

Next, the portable terminal determines whether a predetermined speaker is selected among the plurality of video call participants from the user (step 105). Blocking the voice output of the other speaker except the voice of the predetermined speaker to output only the voice of the selected predetermined speaker (step 107).

Here, the portable terminal can distinguish each speaker who has transmitted the voice signal through a call ID included in the voice signal, and can distinguish between the speaker selected by the user and the speaker not selected.

If it is determined in step 105 that no speaker among the plurality of speakers participating in the video call is selected, the portable terminal outputs the voices of all the received speakers (step 109).

Thereafter, the portable terminal determines whether an event signal indicating termination of the multi-party video call has been generated (step 111), and if it is determined that an event signal indicating termination of the multi-party video call has been generated, the mobile terminal releases the multi-party video call call (step 113). If it is determined that the event signal indicating the end of the multi-party video call has not been generated, the process returns to step 105 and the subsequent steps are sequentially performed.

As shown in FIG. 1, in a voice processing method according to an embodiment of the present invention, the voice output of other speakers except for a predetermined speaker selected by the user is blocked, so that the portable terminal outputs only the voice of the predetermined speaker selected by the user. This enables accurate communication with a predetermined counterpart selected by the user even during a multi-party video call.

2 is a flowchart illustrating a method of processing a voice in a multi-party video call according to another embodiment of the present invention, and a process of lowering a voice output of all other speakers except a predetermined speaker among a plurality of video call participants by a preset ratio Indicates.

Steps 201, 203, 205, 211, and 213 shown in FIG. 2 perform the same process as steps 101, 103, 105, 111, and 113 shown in FIG. 1, respectively, and thus detailed descriptions thereof will be omitted.

Referring to FIG. 2, when it is determined in step 205 that a predetermined speaker among a plurality of video call participants is selected, the portable terminal decreases the voice output level of all other speakers except for the selected predetermined speaker by a predetermined ratio.

Here, the voice output level means the volume of the voice output to the speaker or the headset terminal of the portable terminal. For example, the voice of other speakers except the voice of the selected speaker may be reduced by 50% compared to the speaker of which the volume is selected. Can be.

If it is determined in step 205 that no speaker among the plurality of video call participants is selected, the portable terminal outputs the voices of all the received speakers in the same size (step 209).

As illustrated in FIG. 2, in the voice processing method of a multi-party video call according to another exemplary embodiment of the present invention, a predetermined voice selected by a user is not blocked as shown in FIG. By reducing the voice output level (ie, volume) of other speakers except the speaker, the voice of a predetermined speaker relatively selected by the user is clearly output.

In addition, in FIG. 2, for example, the voice output level of the other speakers except for the voice of the predetermined speaker selected by the user is reduced. It may also be configured to achieve the same effect by increasing it significantly compared to the voice output level of.

3 is a flowchart illustrating a voice processing method in a multi-party video call according to another embodiment of the present invention, in which all other speakers except the voice of the predetermined speaker are received only when a voice of a predetermined speaker selected from a plurality of video call participants is received. Indicates the process of blocking the audio output.

Steps 301, 303, 305, 313, and 315 shown in FIG. 3 perform the same processes as steps 101, 103, 105, 111, and 113 shown in FIG. 1, respectively, and thus detailed descriptions thereof will be omitted.

Referring to FIG. 3, when it is determined in step 305 that a predetermined speaker among a plurality of video call participants is selected, the portable terminal determines whether a voice of the selected predetermined speaker is being received (step 307).

If it is determined in step 307 that the voice of the selected predetermined speaker is being received, the portable terminal blocks all voice outputs of the other speaker so that only the voice of the selected predetermined speaker is output from among the plurality of received voices (step 309). .

If it is determined in step 305 that none of the plurality of speakers participating in the video call is selected, the portable terminal outputs the voices of all the received speakers (step 311).

In addition, if it is determined in step 307 that the voice of the predetermined speaker is not received, the portable terminal proceeds to step 311 and outputs the voices of all the speakers.

As shown in FIG. 3, in the voice processing method according to another embodiment of the present invention, a voice output of all other speakers not selected is selected only when a voice of a predetermined speaker selected by the user is received by the portable terminal. By blocking, the multi-party video call can be easily performed while communicating precisely with a predetermined counterpart selected by the user.

4 is a block diagram illustrating a configuration of a portable terminal for performing a voice processing method in a multi-party video call according to an embodiment of the present invention.

4, a portable terminal according to an embodiment of the present invention includes a camera unit 411, a display unit 413, a graphics processor 415, a video codec 417, a microphone 421, a speaker 423. , An audio codec 425, a controller 430, a storage 440, a key input unit 450, and a wireless transceiver 460.

Although the configuration of the camera unit 411 is well-known, it is not shown in detail, but includes a lens, an image sensor, and an analog-digital converter. When an image capture or video call function is executed, a subject incident through the lens is performed. The optical signal is converted into an electrical signal corresponding to the optical signal incident through the image sensor, and the converted electrical signal is converted into a corresponding digital image through an analog-to-digital converter and then provided to the graphic processor 415.

Here, the camera unit 411 may capture an image of 15 frames per second or 30 frames per second under the control of the controller 430.

The display unit 413 may be, for example, a display device such as a liquid crystal display (LCD) or an organic light emitting diode (OLED), and an image signal provided from the graphic processor 415. Based on the display, the user interface such as a menu, an operation state, an application program execution screen, and the like of the portable terminal are displayed.

In particular, the display unit 413 receives a video call participant and / or a video of the video call participants and / or the user from the graphic processing unit 415 during a multi-party video call, and displays a predetermined display of the video call participants and / or the user's video, respectively Mark the area. In addition, when taking a picture, a preview image and a captured image are displayed.

The graphic processor 415 receives the digital image from the camera unit 411, reduces the size of the image by converting the color format of the digital image, and provides the digital image to the video codec 417. For example, the graphic processor 415 may receive raw data in the form of RGB (Red, Green, Blue) from the camera unit 411, encode the raw data, and convert the raw data into YCbCr 420 format.

In addition, the graphic processor 415 receives a decoded image (eg, a video call participant's image) from the video codec 417, and resolutions so that the received image can be displayed on a predetermined area of the display unit 413. After performing graphics processing such as a display position, a frame rate, and the like, the display unit 413 is provided to the display unit 413.

The video codec 417 receives a digital image from the graphic processor 415, encodes it into a predetermined video call format, and provides the digital image to the controller 430. In addition, the video codec 417 receives a predetermined image (for example, a video call participant's image) provided from the controller 430, decodes the image, and provides the decoded image to the graphic processor 415.

The video codec 417 can encode and decode video using codecs such as H.261, H.263, H.264, and MPEG-4, and H.263, MPEG-4 during video calls. Simple profile level 0 can be used to encode and decode video.

The microphone 421 receives a user's voice during a video call and a voice call, converts the input user's voice into an electric signal corresponding thereto, and provides the same to an audio codec 425.

The speaker 423 receives the audio and / or sound signal decoded from the audio codec 425 and converted into an analog signal and amplified to a predetermined level, and outputs the audio and / or audio signal in the audio frequency band.

The audio codec 425 receives an analog form of an electrical signal corresponding to the user's voice from the microphone 421, converts it into a corresponding digital signal, and encodes the converted digital signal to comply with a voice call or video call transmission standard. After it is provided to the control unit 430.

In addition, the audio codec 425 receives a predetermined voice and / or sound signal and a volume control signal from the control unit 430, and decodes the predetermined voice and / or sound signal based on the converted audio signal. In addition, the audio codec 425 adjusts an output level (ie, volume) of a predetermined voice and / or sound signal converted into the analog signal based on the volume control signal and provides the same to the speaker 423.

Although not shown, the audio codec 425 may include a vocoder, a digital to analog converter (DAC), and an amplifier to perform the above function.

In addition, the audio codec 425 uses a codec such as, for example, QualComm Code Excited Linear Predictive Coding (QCELP), Enhanced Variable Rate Codec (EVRC), G.711, G.723, G.723.1, G.728, and the like. To perform encoding and decoding of speech.

The controller 430 controls and processes a voice call and a video call, which are inherent functions of the portable terminal. For example, the controller 430 multiplexes the video and audio signals provided from the video codec 417 and the audio codec 425 and generates a baseband signal by channel coding the multiplexed signal. To provide.

In addition, the controller 430 may channel decode and demultiplex the baseband signal provided from the wireless transceiver 460 to provide the demultiplexed video and audio signals to the video codec 417 and the audio codec 425, respectively. Can be.

When an event signal indicating a multi-party video call is provided from the key input unit 450, the controller 430 connects the multi-party video call call to the mobile terminal of each participant participating in the multi-party video call.

Subsequently, the controller 430 receives a voice signal provided from a plurality of speakers participating in the multi-party video call, extracts a call separator Call_ID included in the received voice signal, and then calls the speaker corresponding to each received voice signal. Separate.

In addition, when the multi-party video call is connected, the control unit 430 assigns a predetermined serial number to each participant who participates in the multi-party video call in the order in which the call is connected or in a predetermined order, and a shortcut key or number is assigned to each assigned serial number. By assigning a key, a user can easily select a predetermined speaker among a plurality of speakers through an assigned shortcut key or numeric key.

The controller checks whether a key event signal indicating a selection of a predetermined speaker is provided from the key input unit when the multi-party video call is started, and when a predetermined speaker is selected from among the plurality of speakers, the voice of the selected speaker may be highlighted according to a preset method. Take control to ensure that.

For example, if a predetermined speaker is selected, the controller may block voice output of other speakers except the selected speaker so that only the selected speaker's voice is output through the speaker, and the voice output level of the other speaker except the selected speaker is predetermined. Providing a volume control signal to the audio codec to reduce the ratio so that the voice of the selected speaker is output louder than the voice of other speakers.

The control unit may block a voice of another speaker when a voice is provided from a predetermined speaker selected during a multi-party video call, and output a voice of another speaker when the voice of a predetermined speaker is not provided. Make it easy to communicate with the speaker.

The storage unit 440 may be configured of a nonvolatile memory such as a flash memory, an electrically erasable and programmable read only memory (EEPROM), a system program (for example, an operating system) required for basic operation of the portable terminal, and / Or save other applications.

In addition, the storage 440 may store data generated by a user, and may store data generated during the execution of the system program and / or the application program.

The key input unit 450 includes a plurality of number, character input keys, and function keys for performing a special function. When a key operation such as a multi-party video call or a speaker is selected by a user, a key input signal corresponding thereto is generated. The control unit 430 is provided.

The wireless transceiver 460 converts a radio frequency (RF) signal received through the antenna 461 into a baseband signal and provides it to the controller 430, and the base provided from the controller 430. The band signal is converted into a radio frequency signal and output through the antenna 461.

In particular, the wireless transceiver 460 transmits a video call signal of a predetermined frame per second encoded by the video codec 417 and the audio codec 425 to a portable terminal of the multi-party video call participants. The video call signal transmitted from the mobile terminal of the video call participants is received and provided to the controllers 430 and 140.

Although described with reference to the embodiments above, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the spirit and scope of the invention as set forth in the claims below. Could be.

1 is a flowchart illustrating a voice processing method in a multi-party video call according to an embodiment of the present invention.

2 is a flowchart illustrating a voice processing method in a multi-party video call according to another embodiment of the present invention.

3 is a flowchart illustrating a voice processing method in a multi-party video call according to another embodiment of the present invention.

4 is a block diagram illustrating a configuration of a portable terminal for performing a voice processing method in a multi-party video call according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

411 camera portion 413 display portion

415: graphics processor 417: video codec

421: microphone 423: speaker

425: audio codec 430: control unit

440: storage unit 450: key input unit

460: wireless transceiver

Claims (11)

In the multi-party video call method, Receiving a voice from at least one speaker participating in the multi-party video call; Selecting a predetermined speaker among the at least one speaker; And And a process of outputting a louder voice of the selected speaker than a voice of another speaker except the selected speaker. The method of claim 1, wherein the performing of the processing for outputting a louder voice of the selected speaker more than the voice of other speakers except for the selected speaker is performed. And blocking a voice of another speaker except for the selected predetermined speaker. The method of claim 1, wherein the performing of the processing for outputting a louder voice of the selected speaker more than the voice of other speakers except for the selected speaker is performed. And reducing the voice level of the other speakers except the selected predetermined speaker at a predetermined rate. The method of claim 1, wherein the performing of the processing for outputting a louder voice of the selected speaker more than the voice of other speakers except for the selected speaker is performed. When the voice of the selected predetermined speaker is provided, the voice output of the other speaker is cut off; when the voice of the selected predetermined speaker is not provided, the voice of the other speaker is output. Treatment method. The method of claim 1, wherein the step of selecting a predetermined speaker among the at least one speaker, And classifying the predetermined speaker through a call separator included in each of the voice signals provided from the at least one speaker. A controller configured to output a louder voice of the selected speaker than a voice of other speakers except for the selected speaker, when a predetermined speaker is selected from at least one speaker participating in a multi-party video call; And And a audio codec for decoding at least one voice of the predetermined speaker and the other speaker's voice signal selected by the controller. The method of claim 6, wherein the control unit And a method of controlling a voice of the selected predetermined speaker to be output louder by blocking voices of other speakers except for the selected predetermined speaker. The method of claim 6, wherein the control unit, And a voice level of other speakers other than the selected predetermined speaker is reduced to a predetermined rate so that the voice of the selected predetermined speaker is output to be louder. The method of claim 6, wherein the control unit When the voice of the selected predetermined speaker is provided, the voice output of the other speaker is cut off; when the voice of the selected predetermined speaker is not provided, the voice of the other speaker is output. Portable terminal performing the processing method. The method of claim 6, wherein the control unit A portable terminal for performing a voice processing method during a multi-party video call, characterized in that the predetermined speaker is distinguished by a call separator included in each of the voice signals provided from the at least one speaker. The method of claim 6, wherein the control unit And assigning a predetermined serial number to each of the at least one speaker participating in the multi-party video call, and assigning one of a shortcut key and a numeric key to each of the assigned serial numbers. A portable terminal performing the voice processing method.
KR1020070120910A 2007-11-26 2007-11-26 Method for processing voice during multilateral image communication and portable terminal having the same KR20090054178A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220011348A (en) * 2020-07-21 2022-01-28 주식회사 엔씨소프트 Method for game service and computing device for executing the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220011348A (en) * 2020-07-21 2022-01-28 주식회사 엔씨소프트 Method for game service and computing device for executing the method

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